Saw clamp



1,625,666 E. N. LARGE SAW CLAMP April 19, 1927.

Filed Majoh l2. 1926 y 1 l Y ML NVENTOR.

Patented Apr. i9, i927.

UNE'EEE) d Third EDWARD N. LARGE, 0F RYDERWOOD, WASHINGTON.

SAW CLAMP.

Application led March 12, 1926.` Serial No. 94,270.

This invention relates to clamping devices and pertains particularly to a saw supporting clamp. j

The primary object of this invention is the provision, in a manner as hereinafter set forth, of a clamp device of improved construction, whereby a saw `body may be easily and quickly placed in position and rigidly held while the teeth thereof are being sharpened. v

The invention contemplates the provision of a pairof jaws'loosely held together by means of transversely extending bolts, and having means extending longitudinally thereof between the lower portions of the same whereby spreading action` mayk be .brought to bear against the inner faces of the jaws at the lower part thereof, to move the upper portionof the jaws inwardly in clamping relation. One of the jaw members is provided with supporting earsl one upon each end, by means of which the pair of jaws are pivotally supported upon appropriate standards, which supporting means and standards have been fully described and claimed in applicants former Patent No. 1,513,916.

A further and final object of the invention is the provision, in a manner as hereinafter set forth, of an improved saw clamp of strong and durable but simple construction, easy to manipulate and inexpensive to manufacture.

The invention will be best understood fromv a consideration of the following detail description taken in connection'with the accompanying drawing forming a part of this specification, with the understanding that` they invention isv not confinedto any strict conformity with the showing of the drawing but may be changed and modified soy long as such changes and modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawing y Fi ure k1 shows the clamp structure einbodying this invention, in side elevation.

Figure 2 is a section taken upon the line 2-2 of Figure l looking in the direction of the arrow.

Figure 3 is a transverse section of the clamp taken upon the line 3*?) of Figure l.

Figure 4 is a transverse section of the clamp structure taken upon the line 4-4 of Figure l.

Figure 5 is a transverse section through the clamp similar to that of Figure 4 but showing the jaw spreading cam member shifted to open the jaws.

rReferring now to the drawing in detail wherein like numerals of reference indicate corresponding parts throughout the'several views, there is indicated by the numeral l a pair of spaced supporting standards of channel structure, each having a brace 2 attached thereto. rlhe upper portion of the web of each of vthe chaunelled standards is provided with a longitudinal slot 3, and slidably positioned in each of the channels l, is a relatively short channel element 4 of less width than the channel l to enable it to slide in the member l as is shown in Figures l and 2. The upper portion of the channel portion 4 is provided with a block 5 through `which* a bolt 6 extends, the outer end of which bolt carries thereon a crank member 7. Another bolt 8 is carried by each channel member 4 and extends through the adjacent slot 3 of the standard l and is adapted to secure the channel members l and 4 together in adjusted relation.

Mounted between the supporting standards, is a saw clamp formed of a pair of jaw members 9 and l0 respectively, the aw member 10 being of greater length than the member 9 and having each end thereof formed to prov-ide the substantially U-'shaped end brackets 11, the outer leg of each of which is traversed by the bolt 6 and supported there. by between the shiftable channel portions 4, of the supporting standards.

`Each of the jaw members 9 and l0 is bent outwardly throughout its length adjacent the lower edge thereof as indicated at 12 land then downwardly to set up the parallel offset portion 13,'thus forming a longitudinally extending channel 14 between the lower portions of the jaws 9 and 10. The upper or contacting portions of the jaws 9 and l0 are provided with a longitudinally extending series of apertures through which securing bolts l are extended to hold these upper or gripping,1 portions oit the jaws in relatively close relation.

The oilset portion 12? ol. one of the jaws, has secured thereto as at 1G, one end ol an inwardly projeetinp` ,fluide pin l? which guide pin extends transversely ont the lower portion ot the channel lil: and through an :u ierture 18 'termed through the ott'set portion .13 et the opposing jaw.

Extending` longitudinally in the channel leland overlying the guide pins l extendingr transversely thereot, is a cam shalt indicated generally by the numeral 19. 'lhis shaft where it orerlies the pin lll' is provided with the peripheral groove Q0 adjacent each end` tor the engagement ot the pin li' lying' therebeneath. rlhrough the engorgement o'l the pins in the grooves, the sha'ltlll is prereuted from shitting' longitudinally oit the clamp.

rlhe sha'tt 19 also provided with means to set up diametrically oppositely arranged team laces or lugs ill.. The means employed 'tor forming;1 the cam lues 2l. in the drawing` as shown by the lnashiiug or compressi ot. the shalt at intervals to spread the same, thus 'forming the laterally projwfting lugs or eams 2l. ,-ipplieaut desires it to he un dorstood, however, that he is not limited to this means ol lim-ailing, the cams upon the sha'lt lll but any appropriate cam feltrueture may be employed.

.lhe shalt 19 is provided with aetuating lerers` {2.2 by means ot which it may be revolved to brine` the rains to a position to spread the lower portion ol the jaws thus elosinp; the upper portieri or rire Versa. Noti-hes 5l are termed in the lower edite ot each ol the portions lil ol the jaw member to rereire the levers when the same are swung; upwardly to a position all right augrles to the l'aee ot the jaws.

llpon reference to Figure o it will he seen that when the lever arm 521'! is ,prunel upwardly to the position shown. that is, at rigfht angles to the 'tace oi. the jaws Sl and lll. that the cams 2l are arranged in vertical position and. the lower part lil ol. the inw members may he pressed inwardly to spread the upper gripping;I portions et the jaws to allow Ator the insertion theiebetween ol the body ol? a saw When the lever is swungr downwardly to the `uizfitions shown in Figures 3 and l, it will he seen that the cams L2l are swung); to a position transversely of the jaws 9 and l() to contact with the inner tarea ol" the oll'set portions` 'lzl to spread the same thus causing1 the upper or grippingl portions olf the jaws to elor-e tightly araiust the .sides ol the saw llto chimp and hold the saine tightly.

Through the medium ol' the artuatiire,- cranks i' which are attached to the bolt il ear- Leest-iets rying the clamp, the clamp "and saw carried thereby may he swung to any desired position while workingupon the saw.

Haring thus described my invention` what l claim is l. ln a saw clamp oit the character de scribed, comprising supporting elements, a pair ot relatively longI 'jaw members, one ol greater length than the other and having the ends thereof formed to provide supporting' brackets, means for securing said supporting;l braelrets to said elements, adjustable means t'or scouring.;- said jaw members loosely together, and means positioned between said jaw members at the lower portions ol" the same for spreading apart the said lower portions to cause the upper portions thereof to come together in gripping; relation.

:2. ln a. saw clamp olf the character described, comprisingl a support having vertieally positioned. substantially U-shaped standards, a pair oli relatively long jaw members, means adjustably engaged in the jaw members lor securing,r the same together, brackets termed at the end ot one of the jaw members and adjustably engaged with the standards, a shalt extending longitudinally olf and. between the lower portions of said jaw members beneath said securing means, and cam elements carried upon said shalt an d adapted upon oseilhxtion, to spread said lower jaw portions to cause the upper portions oil' the jaw members to come, together in ,gripping relation.

3. ln a saw elamp of the character described, comprising a siipporting` element haring; vertical standards, a pair olf rela.- tirely long.;- jaw menibers, means for adjustably and .loosely securing the upper portions of said ia w members together, the lower portions ol the jaw members being ollset to provide a channel space therebetween, guide pins earried by one of said offset portions and exteiulinpy transversely oit the channeled space through the opposing' olla-tet portion, means extendiiip; longitudimrlly ot said channel spare and overlying4 said guidopins, whereby said otlset lower portions may be caused to more apart to brina` the upper portions oit said jaw members in gripping relation` and means swintringrly connecting,y one ol.l the jaw members to said stamlards.

In a .saw clamp of: the character do scribed, ctmnnieinel supportii'ig elements, a pair ot relatively lonp; jaw `members, means tor loosely ifeeuring the upper portions ot said jaw members together, the lower por tion ol. each ot .sa id jaw members beine' otlset throughout its length to provide a channel space between the jaw members, lduide pins earried by one ot said olllset portions and extending; transversely ol. the channeled space through the opposing offset portion, a shall-'tf extending longitudinally of said channeled space and overlying said guide pins, cam elements carried upon said shaft and adapted to Contact with the inner faces of the offset portions of said jaw members to Spread the same to cause the upper portions of said jaw members to be brought tovether in gripping relation, upon the oscillation of portlng elements.

In testimony whereof, I aix my signature hereto.

EDWARD N. LARGE. 

